Skewer and bearing therefor.



PATENTED MAR. 10, 1908.

R. SGHOFIELD. SKEWER AND BEARING THEREFOR;

APPLICATION FILED JUNE 24,1907.

.. ROBERT SCHOFIELD, OF NEW BEDFORD, MASSACHUSETTS.

SK'EWER- AND BEARING 'rnnnnron.

Specification of Letters Patent. Patented March 10, 1908.

Application filed June at, 1907. Serial No. 380,476.

1'0 all whom it may concern: Be. it known that. 1, ROBERT ScnoFIELn, a citizen of the. United States, residing at New 'Bedford,-county of Bristol, and Stateof Mas: 5 sachu-sett's, have invented an Improvement in Skewersand BearingsThei'efor, of which the following description, in connection with the accompanying drawing, is a sp'ecificat ion' li ke letters on the drawing representing like arts.

. s' invention relates to skewers for bob- --bins rincipal object to provide a novel form, of I e'aring which isles's liable to become insjjur'ed duringthe handling of the skewers than bearings now commonly used;

The invention is illustrated as embodied in a Ske wer for bobbins such as are used in spin- --fn1i1g machmery and on which roving 1s 1T wound; These skewers as now ,commonly '5 de are provided at their lower end with a tip or point'having a hearing which rests in a j icup or socket on the bearing-rail of the creel,

tthqupper'end of the skewer entering "an ap- 2.

erture n the top rail and being sustained in proper position, thereby. a

r Inorder that theskewer may run properly it essential that the bearing on the "lower endof thetipthereofbe small and 30 .withoutflaws, but inthe careless handling 'Whichtheseskewers are apt to receive in a spinning mill, these tips veryfrequently becomeinjuredmore or less. To avoid .this objection and to provide a skewer in which the bearing cannot become easily injured, I have provided said skewer with a recess in its lower end which constitutes the bearing surface .of'the skewer, and have provided the 'cree'lpwith the projecting tip, the end of .ing for the skewer; Since the tip is supported by the creel of the spinning machine, it is not subjected to the rough uses to which skewers are in transportation; around \the mill, and because of the fact that the bearing I surface on the skewer is contained within a recess in the end thereof, there is nodanger of said bearing surface becoming injured.

This invention is of especial advantage in a bearing having features shown in my Patent No. 704,584, dated July 15, 1902. In

said patent the tip of theskewer is provided with two bearing surfaces having different coefficients of friction, one of which is adapted to rest on' the bearing on the creel when andbearingstherefor, and has for its v per ends of the skewers are received.

which enters the recess and forms the bear-' secured to the rail 3.

surfaces are at'the end of the tip on the skewer and are therefore'exposed in such a way that they are liable to be injured during .the comparatively rough handling which the skewervreceives in the mill. By means of my present invention this liability is avoided for it is possible to place the two bearing sur faces of different coefficients of friction on the tip'which forms a permanent part of the creel and is not subjected to rough usage and to place the bearing surface on the bobbin within the recess at the end thereof so that it is fully protected. 1

In the drawings wherein I have illustrated one form of my invention, Figure 1 shows a portion of a creel of-a spinning machine hav ing bobbins supported therein; Fig. 2 is a 'view of a filled bobbin, the lower end of it being shown in section to'better show the way in which it is supported in the bearing, and Fig. 3 shows the manner in which an empty or approximately empty bobbin is sup ported.

The creel herein shown has the usual bearing' rail 3 on which the skewers 4 of the bobbins5 are supported, and the to rail 6 provided with guide openings into w 'oh the up- It is now the common practice to make the lower end of the skewers with projecting tips which rest in recesses-formed in the bearin rail 3. According to my present invention provide the rail 3 with a plurality of tips or bearings 8 which project upwardly 'therefrom and provide each skewer in its lower end with a recess 7 which has within it a bearing surface to rest on and engage the end of the ti 8. The ti s or bearings 8 may be made of wood, meta, or any suitable material, and they are preferably permanently or fixedly If desired the skewer may be provided with a hardwood or metal bearing member 12 which forms the bottom of the recess 7 therein and which forms the bearing surface that contacts with thetip-8, although this construction is not necessary.

By locating the bearing surface on the skewer within a recess said bearing surface is fully protected and will not be injured during any of the rough usage to which the skewer may be subjected.

In the present embodiment of my invention I have shown a specially-constructed tip which involves a main and an auxiliary bearing, the main bearing being constructed to produce a greater friction between itself and the skewer than is roduced by the auxiliary bearing. The aux'i iarybearing is designated 9 and it is preferably yieldingly mounted and normally projects beyond the main bearing 8. The yieldin support for the auxiliary bearing is such that it will support the em ty bobbin, but is insuflicient to sup ort the filled bobbin, and as a result when t h empty, the skewer is supported by the auxiliary bearing only, while when the bobbin is full the yielding support for the auxiliary bearing gives thereby permitting the skewer to rest against the main bearing 8. In the present form of my invention this auxiliary earing 9 is yieldingly sustained by a spring 10 which is received in a recess 11 within either the main bearing 8 or the rail 3 as desired, and as a simple embodiment of the invention the auxiliary bearing 9 may be made integral with the spring 10, one end of the spring being bent to form said auxiliary bearing. Preferably this auxiliary bearing will b; arranged axially of the main bearing 8 as s own.

The spring 10 has such a tension that it will sustain the weight of an empty bobbin but will be compressed by the weight of afullbobbin. When, therefore, a bobbin is filled and placed on its skewer the weight of the bobin and the material thereon will compress the spring 10, as shown in Fig. 2, thereby allowing the skewer to rest firmly on the end of the tip 8. In this case there is a maximum amount of bearing surface between the skewer and the ti as will be obvious.

When the bobbin is nearly empty the spring 10 will slide the auxiliary bearing 9 in t e tip 8 thereby projecting the end thereof beyond the tip and lifting the skewer from the ti as shown in Fig. 3. When this occurs t e skewer will be supported on the auxiliary bearing 9 only. 'V\ en the skewer is thus supported, it will have a minimum amount of friction on its bearing, as will be obvious. If desired the main bearing 8 and the auxiliary bearing 9 may be so constructed as'to have different coefficients of friction (although this is not essential), the main bearing having the greater coeflicient of friction, and the auxiliary bearing the lesser.

When my invention as herein illustrated is in practical use the bobbin will not overrun when the roving is being drawn from a filled bobbin because there is sufficient friction between the skewerand its supporting member to. prevent such overrunning, while, when the bobbin is nearly empty the friction of the skewer on the hearing will be so as to obviate any danger of breaki 1e roving. Furthermore, by reason of t 1e construction the bearing surface on the skewer is completely protected so that it will not become lnjured'by any rough handling of the skewer.

It is not essential. to the invention that the special foiin ;of tip herein shown having the main and auxiliary bearing should be emloyed, although I refer this construction because of the manifest advantages in preventing the bobbin from overrunning.

Although I have shown the invention herein as embodied in a skewer and its bearing, e bobbln 1s' yet it will'be obvious that the invention is not necessarilylimited to a skewer.

I have shown herein only one form of my invention and have not attempted to show all embodiments thereof.

Havingffully described my invention, what I claim as'new and desire to secure by Letters Patent i s:--

1. The combination with a skewer having a recess in its lower end rovided with a hearing surface, of a main caring for engaging said bearing surface, and a yieldingly-mounted auxiliary bearing also adapted to engage said bearing surface.-

2. The combination with a skewer having a bearing surface at one end, of a bearing, separate from the skewer and on which it rests, said bearing having two separate bearing surfaces of different coefficients of friction, and means governed by the weight on the skewer to determine which hearing shall be operative. r

3. The combination with a skewer formed at one end with a bearing surface of a main and an auxiliary bearin for the skewer, and means to bring the aux' iary bearing into operative osition for sup orting the skewer as the loa on the skewer dbcreases.

4. The combination with a skewer having a recess in one end provided with a bearing surface, of a main and an auxiliary bearing for the skewer,- each adapted to engage the bearing surface thereof, and means to bring the auxiliary bearing into operative position as the load on the skewer decreases.

5. The combination with a skewer having a bearing surface at one end, of a main bearing for engaging said bearing surface, and a yieldinglyemounted auxiliary bearing also adapted to engage said bearing surface on the skewer.

6. The combination with a skewer having a bearin surface at one end, of a main rigidly mounte bearing therefor and a springpressed auxiliary bearing, said skewer resting on the main hearing when it is loaded and on the auxiliary bearii 1': when it is unloaded.

7. The combinr wn with a skewer having reduc a. bearin' siirface at one end, of a creel having In testimony whereof, I have signed my mam an an auxiliary bearing for the skewer, name to this specification, 1n the presence of the main bearmg having a greater bearing two SUbSOIlblIlg witnesses.

surface than the auxiliary bearing surface, ROBT. SCHOFIELDQ -5 and means to bring the auxiliary bearing into Witnesses: e

Operative position as the load on the skewer EDWARD T. BANNON, decreases.. 1 MAY L. SAWYER. 

